OSNR monitoring technique based on orthogonal delayed-homodyne method

Author

Youn, C.J. ; Park, K.J. ; Lee, J.H. ; Chung, Y.C.

Author_Institution

Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea

Volume

14

Issue

10

fYear

2002

Firstpage

1469

Lastpage

1471

Abstract

The authors propose and demonstrate a simple technique to monitor the optical signal-to-noise ratio (OSNR) of wavelength-division-multiplexing (WDM) signals using the orthogonal delayed-homodyne method. This technique estimates the OSNR by analyzing the receiver noise characteristics after eliminating the signal components at a specific frequency within the modulation bandwidth. The results show that the OSNR of WDM signals could be monitored with accuracy better than 0.5 dB in the range of 12/spl sim/35 dB.

Keywords

homodyne detection; noise measurement; optical fibre networks; optical noise; optical receivers; optical signal detection; wavelength division multiplexing; OSNR monitoring technique; WDM networks; WDM signals; accuracy; modulation bandwidth; optical signal-to-noise ratio; orthogonal delayed-homodyne method; receiver noise characteristics; signal components; specific frequency; wavelength-division-multiplexing; Frequency estimation; Frequency modulation; Monitoring; Optical modulation; Optical noise; Optical receivers; Propagation delay; Signal analysis; Signal to noise ratio; Wavelength division multiplexing;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2002.802377

Filename

1037553